Door-lock.



J. A. MCLAIN & H. A. BROOKS. DOOR LOOK. APPLICATION FILED 00T. 21. 1009.

98L099. .Patented .121111104911v l/l/Mess es /0 ven/OVG.

found: for inserting a even: whenl the proper UNITED srnrns JAMES A.MGLAIN AND HARRY A. BROOKSr OF LOS BROOKS ASSIGNOE, BY MESNEASSIGNMENTS, TO

ANGELES, CALIFORNIA.

ANGELES,A CALIFORNIA; SAID GEORGE M. HARKER: Oli"4 LOS DOOR-LOCK.

Specication ofLetters Patent.

Patented Jan. 10, 191.1.

Application filed October 21, 1909. Serial No. 523,912.

To all whom itmwywuncewv:

Be it known that we, JAMES A. MCLAIN and' HARRY A. Brooks, both subjectsof the King of Great Britain, residing at Los Alngeles, inI the. countyof Los Angeles, State of California, have invented a. certain new anduseful Door-Lock; and we do hereby de- Clare thex following to be alfull, clear, and exact description of the invention, such as will enableothers skilled in the art to-which it appertains to make amd usethesame.

Thisy invention relates to door locks, and has for one` of its objectsto provide a simplel and compact construction therefor which shallembody novel advantageous features and be durable and effective in use.

Another object of the invention is to provide a lock which may beinstalled in a door with. a minimum amount of labor by being fit-tedinopenings easily made by an auger, and inwhichthe key hole,l by beingplaced in the knob on the 'o111`tside,. can be easily Still anotherobject is to; provide' a. setmechanism: for the lock which. can bereadily operated' to permit withdrawal of the bolt by the turning ofeither the inside knob or the outside knob, or to permit withdrawal oftheI bolt by turning the outside knob: after a suitable key has beeninserted in the lock, or to permit locking'the bolt against4 withdrawalby manipulation, of either the inside knob'- or the outside knob key hasbeeninserted in` the lock.

@ther objects and the advantages of the invention will be apparent to:those skilled in` the art, from: a consideration of the following,description of one form of construc tion which embodies it, taken inconnection with. the aecompanying. drawings, in which- Figure 1 is ahorizontal central section through the lock fittedina door;l Fig'. 2 isa section on line 2-2 of Fig. 1; Fig. 8' is a perspective detail of apart of the deadlock mechanism and bolt; Fig. 4 is an elevationalfragmentarydetail of the bolt-withdrawing mechanism; Fig. 5 is anelevationL of a portion of the edge of the door showing end of bolt andguide-plate; Fig. 6 is a. section through the inside knob with containedparts in elevation, and Fig. 7 is a detail of the dog.

A s shown, the lock may be tted in the stile 2 of the door, havingtherein circular intersecting holes 3' and 4', which latter may be madewith an ordinary auger of suitable diameter, Hole 8 may have a lining 5and 1n the inner end thereof a spring 6 bearing aga-inst the head 7 ofbolt 8, which latter has its4 outer end disposed in guide-plate 9 and 1sprovided with a slot 10 nea-r its head 7 In hole 4 is disposed a tube 11passing through slot 10 of bolt 8 and having arranged therein a rod 12.The hollow outside knob 13, preferably of chilled steel, has aixedthereto sleeve 14, which extends over tube 11 and nearits inner end issecured by screw 15, which latter, when the parts of the lock areassembled, is concealed and out of reach from the outside in consequenceof the end pf the sleeve being tted in a bushing 16 disposed in theoutside end of opening 4, as will readilyv appear from Fig. 1 of thedrawings.

In knob 13 is arranged any suitable mechanism 52', operable by' asuitable key 5310 move rod' 12 to the right, -for a purpose hereinaftermentioned. As shown the mechanism 52 may consist of a part 54 integralwith sleeve 14 and provided with a recess in which, as in a common typeof lock, is disposed therein openings (not shown, mon in a form of Yalelock), with pins therein which are adapted to move the plungers 57 outof the opening and Hush with the surface of the cylinder, to permitmovement of the cylinder when the key 53 is inserted therein. rl`he tube11 extends, on the inside of the door, through hollow insilde knob 17;the latter being made up of half'f parts 18 and 19. The part 18 carriesa sleeve 20 having its end disposed in bushing 21 itted at the insideend of opening 4. On the interior of sleeve 20 is secured, preferably byscrew 21a, the sleeve 22, one end of' which adjacent to the right sideof bolt 8 is provided with a cam 23 adapted to engage lugs 23a on bolt 8when the inside knob is turned; its other end extending into part 18 of`knob 17, as shown in Fig. 1. A dog 25, provided with an opening 26 toaccommodate the tube 11, and' provided with lugs 27, iscarried by rod 12at its end in knob 17 by means of a pin 28 having its ends guided inslots 29 on each side of tube 11. The dog'25- is provided with one ormore teeth 30 adapted to mesh with the teeth 31 of a circular rack 32 acylinder 56 which has ecause com# on the interior Wall of part 18 ofknob 17. Disposed between the dog 25 and a shoulder 33 on sleeve 20, isthe setting mechanism 34, Which may consist of a part 35, adjacent toshoulder 33, loosely mounted on sleeve 22 and provided with handle 36passing through a slot 36a in part 18 of knob 17, and a part 37,adjacent to dog 25, slidably mounted on the sleeve 22 and guided by pin38 in slot 39 in the sleeve, the parts 35 and 37 having suitable camsurfaces in contact, as shown. A spring 40 is interposed between dog 25and a Washer 41 near the end of tube 11. 'lhe part 19 may be providedWith projections 42, tting indents 43 in part 18 to prevent rotationrelatively there` to, and may be held in place by flange 44 on Washer41, by means of a. screw 45 fitted in tube 11 and having its head 46bearin against the flange. To the left of bolt 8 is the dead-lockmechanism, which may com` prise an annular dislv 47 movable on tube toengage projections 48 on bolt 8, the disk being provided with a flange49 Whereby it is secured to rod 12 by means of 50 guided in slots 51 intube 11.

As will readily be understood, the lock may be installed in the door byfirst placing in the hole 3 the lining 5, spring' 6, bolt 3 andguide-plate 9. Then by mounting on tube 11, with rod 12 therein, theoutside knob and sleeve, the bushing 1G and disk 47, and passing theparts so mounted into the opening` 4 from the outside of the door tohave the tube 11 pass through the slot 10 of bolt 8, whereupon there maybe mounted upon the tube 11 from the inside of the door, the sleeve 22,sleeve 2O secured thereto, the parts 35 and 37 on sleeve 22, dog on rod12, spring 40, part 1t) of the inside knob, Washer 41 loosely and part19, and fitted in the tube.

lhe operation of the lock as above described may be as follows: Thehandle 3G a pin finally screw 45 may be of the setting mechanism may bemoved to occupy a middle position in slot 36a (Fig. 2), in which casethe dog 25 engages the circular rack 32- in the inside knob 17 and theinside and outside knobs are mechanically interlockcd so that by turningeither knob the bolt S mayv be Withdrawn. lVhen the handle is moved' toeither the right or left of the middle position, the dog is moved eitherto the rear or front of the circular rack 32 out of engagementtherewith. In case the dog is moved to the rear of the mounted betweenthe tube I deadlock circular rack 32, the rod 12 is moved to enf gagethe head portion of cylinder 5G, and

though the bolt 8 'may be Withdrawn by;

turning the inside knob, the inside and out` side knobs are notmechanically interlocked until the key is inserted in cylinder 56 tomove it and thereby the rod 12, to bring' the dog on the rod intoengagement with the said sleeve,

. spring-pressed bolt bolt, a knob thereof, a second knob mounted onsaid circular rack. When the handle is moved to bring the dog to thefront of the circular rack, the dead-lock mechanism is brought intoplay, so that neither the inside nor 0utside knobs can be turned toeffect Withdrawal of the bolt on account of the disk 4 7 being moved toa position to engage the projections 48 on the bolt, as will beunderstood.

While one form of apparatus in Which the invention may be embodied hasbeen illustrated and described, it is obvious that various modificationsand changes may be made, and the right is reserved to all suchmodifications and changes as do not depart from the spirit and scope ofthe invention.

W e claim:

1, ln a door lock, in combination, a spring-pressed bolt, a sleevepassing through said bolt, a knob secured to said sleeve at one endthereof, a second knob loosely mounted on said sleeve at the other endthereof, means on the second knob to cu gage said bolt to Withdraw it,means carried by said sleeve and in said second knob for mechanicallyinterlocking said knobs, and key-controlled means in the first knob foractuating said last means.

2. ln a door lock, in combination, a spring-pressed bolt, a sleeve, aknob secured to the sleeve at the outer side of the door, a knob looselymounted on the sleeve at the inner side ofthe door, means on thelastknob for effecting Witl'idyrawal of the bolt, means including a rod insaid sleeve to mechanically interlock the knobs, means on the rod toengage the bolt to deadlock the bolt, and setting mechanism aty theinner side of the door operable at will to actuate either the secondmentioned means or the means to the bolt.

3. In a door lock, in combination, a spring-pressed bolt, a sleeve, aknob affixed to said sleeve at one end thereof, a second knob looselymounted on said sleeve at the other end thereof, a Vrod extendingbetween the knobs and arranged in said sleeve slidably and nonrotativelythereto, means carried by said second knob to engage said bolt towithdraw it, means on said rod and on said second knob adapted tointerlock so that turning of the first knob will eli'ect withdrawal ofthe bolt, setting mechanism in the second knob associated with saidmeans, and key-controlled meansin the first knob to render theinterlocking means effective through the aid of the rod.

4. In a door lock, in combination, a

having lugs and projections thereon, a sleeve passing through saidaiiixed to said sleeve at one end sleeve at the other end thereof, a rodextending between the knobs and passing through means carried by saidsecond lill? knob adapted to coact with said lugs in efecting withdrawalof said bolt, means on said rod and in said second knob adapted to coactto mechanically interlock said knobs, and means on said rod to engagesaid projections to deadlock the bolt.

5. In a door lock, in combination, a spring-pressed bolt, a sleeve, aknob aliixed to said sleeve'at one end thereof, a second knob looselymounted on said sleeve at the other end thereof, a rod arranged in saidsleeve slidably and nonrotatively thereto, means carried by the secondknob to engage the bolt to withdraw it, means on said ro and on saidsecond knob adapted to interlock so that turning of the iirst knob Willetect Withdrawal of the bolt, and means in said first knob movable toengage said rod to render said interlocking means effective.

G. In a door lock, in combination, inner and outer knobs, aspring-pressed bolt having projections thereon, a sleeve extendingbetween said knobs, a rod arranged in said sleeve slidably andnonrotatively thereto, a disk carried by said rod to engage With saidprojections to prevent Withdrawal of the bolt, and nieans in the 'innerknob'operable at will to move the rod to bring the disk into or out ofengagement with said projections.

7. In a door lock, in combination, a spring-pressed bolt, a sleevepassing through said bolt. a. knob connected to said sleeve at one cndthereof, a second knob mounted loosely on the other end of said sleeve,incans adapted to coact with said bolt to Withdraw the saine connectedto said second knob, means including a rod extending between the knobsand arranged in said sleeve to mechanically interlock said knobs atwill, and means on the rod to engage the bolt to deadlock the bolt.

8. In a door lock, in combination, al

springpressed bolt, a sleeve passing through said bolt, aknob connectedto said sleeve at one end thereofa second knob provided With a racktherein andmounted loosely at the other end of said sleeve, meansadapted to coact with said bolt to Withdraw the same connected to saidsecond knob, a rod in said sleeve, a dog carried by said rod, means inthe first knob controlled by a key to move said rod to have the dogengage with said rack, and setting mechanism 1n the second knob to movesaid dog into or out of engagement with said rack at will.

9. In a door lock, in combination, a spring-pressed bolt provided withprojections thereon, a sleeve passingl through said bolt, a knobconnected to said sleeve at one end thereof, a second knob provided witha rack therein and mounted y loosely at the other end of said sleeve,means adapted to coact With said bolt -to Withdraw the same connected tosaid second knob, a rod in said sleeve, a spring-pressed dog on said rodto engage with said rack, means on said rod to engage the projections onsaid bolt, means in the first knob controlled by a key to move said rodlongitudinally in lsaid sleeve, and setting mechanism in the second knobcontrollable at Will to move said rod longitudinally in saidslecve,substantially as described and for the purposes set forth.

In testimony whereof, We have signed our naines to this specification inthe presence of two subscribing Witnesses at Los Angeles, county ot' LosAngeles, State of California, this 11th day of October A. I). 1909.

JAMES A. McLAIN. HARRY A. BROOKS. Witnesses:

A. H. LIDDERs, W. W. BUTLER.

